A METHOD AND APPARATUS FOR MEASURING THE COMPOSITION AND WATER SALINITY OF A MULTIPHASE MIXTURE CONTAINING WATER

摘要

A method for determining the composition and water salinity of a multi-component mixture of a gas and at least one liquid, including water, in a pipe(1), the method comprising the following steps: a. electromagnetic phasemeasurements are performed between two receiving antennas (4) located atdifferent distances from a sending antenna (3), b. based on an empiricallydetermined constant(s) and the above measurements, the effective and imaginarydielectric constants are determined, c. the mixture density is determined, d.the temperature and pressure are determined e. based on the knowledge ofdensities, effective dielectric constants and imaginary dielectric constantsof the components of the fluid mixture and the results of the above steps a-d,the volume fractions of the gas and liquid or liquids of the fluid mixture andsalinity of the water are calculated. An apparatus for performing the methodis also disclosed.